Single Mode Tuning Effects on Lamb Wave Time Reversal with Piezoelectric Wafer Active Sensors for Structural Health Monitoring

Xu, Buli; Giurgiutiu, Victor

doi:10.1007/s10921-007-0027-8

Cited by 210 publications

(126 citation statements)

References 22 publications

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“…The time reversal method is a baseline-free detection approach [19]. A wave signal received at one point can be time reversed and reconstructed at the source point.…”

Section: Piezoelectric Wafer Active Sensormentioning

confidence: 99%

Cost-Effectiveness of Structural Health Monitoring in Fuselage Maintenance of the Civil Aviation Industry †

Dong

Kim

2018

Aerospace

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Abstract:Although structural health monitoring (SHM) technologies using sensors have dramatically been developed recently, their capability should be evaluated from the perspective of the maintenance industry. As a first step toward utilizing sensors, the objective of the paper is to investigate the possibility of using sensors for inspecting the entire fuselage during C-check. First, we reviewed various sensors for their detection range, detectable damage size, and installed weight, which revealed that the piezoelectric wafer active sensor (PWAS) is the most promising sensor for aircraft SHM. Second, we performed a case study of inspecting the fuselage of Boeing-737NG using PWAS. To maintain the same detecting capability of manual inspection in C-check, we estimated the total number of sensors required. It turned out that utilizing sensors can reduce the maintenance downtime and thus, maintenance cost. However, even with a very conservative estimate, the lifetime cost was significantly increased due to the weight of sensor systems. The cost due to the weight increase was an order of magnitude higher than the cost saved by using SHM. We found that a large number of sensors were required to detect damage at unknown locations, which was the main cause of the weight increase. We concluded that to make SHM cost-effective, it would be necessary either to improve the current sensor technologies so that a less number of sensors are used or to modify the aircraft design concept for SHM.

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“…The time reversal method is a baseline-free detection approach [19]. A wave signal received at one point can be time reversed and reconstructed at the source point.…”

Section: Piezoelectric Wafer Active Sensormentioning

confidence: 99%

Cost-Effectiveness of Structural Health Monitoring in Fuselage Maintenance of the Civil Aviation Industry †

Dong

Kim

2018

Aerospace

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“…Professor Victor Giurgiutiu had researched the principle and process of the time reversal focusing [1]. The research result by Professor F. G. Yuan show that this method has good prospects for the health monitoring of complex structures [2].…”

Section: Figure II Time Reversal Focusing Imagingmentioning

confidence: 99%

Study on Guided Wave Imaging Methods for SOLID Rocket Motor Shell Material

Li¹,

Cai²,

Ai³

et al. 2015

Proceedings of the 2015 International Conference on Electrical, Electronics and Mechatronics

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Abstract-It is easy to produce some defects on the adhesive interface of solid rocket motor, and it is urgent to develop a method on guided wave imaging detection. The propagation characteristics of guided wave dispersion and multi modes are analyzed. According to the propagation path, the guided wave imaging methods can be divided into two types, reflective type and projection type. Three imaging methods which are time reversal focusing, synthetic aperture focusing and transmission tomography are studied, the imaging principle and the research of the domestic and foreign research are analyzed in detail..Different guided wave imaging methods must be selected according to the application requirements.

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“…Structural Health Monitoring (SHM) techniques can reduce maintenance costs significantly by switching from the schedule-based maintenance to a condition-based maintenance, and by allowing the use of lighter materials such as composite or sandwich panel in the case of aerospace structures [1]. SHM has been studied for decades, leading to the development of a large panel of techniques [2,3,4,5,6,7,8,9,10,11,12,13,14,15]. Among them, techniques based on guided wave (GW) propagation with piezoceramic transducers are cost-effective and allow a quick on-demand inspection of large areas over thin metallic and composite structures [16].…”

Section: Introductionmentioning

confidence: 99%

A model-based approach for statistical assessment of detection and localization performance of guided wave–based imaging techniques

Moriot

Quaegebeur

Duff

et al. 2017

Structural Health Monitoring

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This paper aims at providing a framework for assessing the detection and localization performance of guided wave-based structural health monitoring (SHM) imaging systems. The assessment exploits a damage identification metric (DIM) providing a diagnostic of the structure from an image of the scatterers generated by the system, allowing detection, localization, and size estimation of the damage. Statistical probability of detection (POD) and probability of localization (POL) curves are produced based on values of the DIM for several damage sizes and positions. Instead of relying on arduous measurements on a significant number of structures instrumented in the same way, a model-based approach is considered in this paper for estimating POD and POL curves numerically. This approach is first illustrated on a simplistic model, which allows characterizing the robustness of the SHM system for various levels of noise in test signals. An experimental test case using a more realistic case with an artificial damage is then considered for validating the approach. A good agreement between experimental and numerical values of the DIM and derived POD and POL curves is observed.

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Single Mode Tuning Effects on Lamb Wave Time Reversal with Piezoelectric Wafer Active Sensors for Structural Health Monitoring

Cited by 210 publications

References 22 publications

Cost-Effectiveness of Structural Health Monitoring in Fuselage Maintenance of the Civil Aviation Industry †

Cost-Effectiveness of Structural Health Monitoring in Fuselage Maintenance of the Civil Aviation Industry †

Study on Guided Wave Imaging Methods for SOLID Rocket Motor Shell Material

A model-based approach for statistical assessment of detection and localization performance of guided wave–based imaging techniques

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